<div [ngClass] = "properties.cssClass ? properties.cssClass : ''" class="step"
     data-flex-box="0" data-flex="main:center mean:box dir:top" style="height: auto; ">
    <div data-flex-box="0" data-flex="main:center"
         [style.height]="properties.height">
        <div class="line"></div>
    </div>
    <div data-flex-box="0" class="step-circle">
    </div>
    <div data-flex-box="1" data-flex="dir:top main:center cross:center mean:box" style="height: auto;">
        <div class="line" data-flex-box="1"></div>
    </div>
</div>
